If the UPS500E-400KVA is equipped with an IP21 configuration, the top outlet is not supported.

• A.True
• B.False

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The () components of Huawei NETCOL5000-A in-line precision air conditioner are optional parts.

• A.Electric heating
• B.Evaporator
• C.Fan
• D.Compressor

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Which of the following options belongs to the natural cooling system?

• A.Direct Ventilation Air Conditioning System
• B.Water-cooled air-conditioning series
• C.Water-cooled cold water air series
• D.Air-cooled upright is an air-conditioning system

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Huawei Technologies Co., Ltd. is GB50174-2008 standard is (), GB50174-2017 standard is ()

• A.Participating units, participating units
• B.audit unit, audit unit
• C.Review unit, participating unit
• D.Participating units, auditing units

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The default battery charging voltage of UPS2000-G is () V/CELL.

• A.2.25
• B.2.45
• C.2.15
• D.2.35

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